Method of power control for uplink transmission
A method for uplink transmission by a UE includes obtaining information regarding a plurality of power control sets each having a plurality of power control parameters, wherein a value of at least one parameter in a first power control set is different from a value of the at least one parameter in a second power control set; obtaining information associating at least one of the power control sets with at least one operational property of the UE; and when at least one of the operational properties is in effect on the UE, transmitting a PUSCH using the parameters of the power control set associated with the at least one operational property in effect.
1. A method for uplink transmission by a user equipment (UE), the method comprising:
obtaining numerology information for a sounding reference signal (SRS) transmission, wherein the numerology information for the SRS transmission is associated with a plurality of power control parameters, and the plurality of power control parameters include a SRS initial target power, a pathloss, a pathloss compensation factor, and a transmit power command (TPC);
determining a value of the SRS initial target power, a value of the pathloss, and a value of the pathloss compensation factor in accordance with a radio resource control (RRC) configuration associated with the numerology information for the SRS transmission;
determining a value of the TPC for the SRS transmission from a TPC for a physical uplink shared channel (PUSCH) in accordance with a SRS resource indication for the SRS transmission;
determining a transmission power of an SRS in accordance with the value of the SRS initial target power, the value of the pathloss, the value of the pathloss compensation factor, and the value of the TPC for the SRS transmission; and
transmitting the SRS using the transmission power.
2. The method of claim 1 , wherein the SRS initial target power, the pathloss, and the pathloss compensation factor are associated with resource information for the SRS transmission.
3. The method of claim 1 , wherein the determining the value of the TPC for the SRS transmission comprises:
obtaining information of an association between SRS resource indication information and the TPC for the PUSCH;
obtaining the SRS resource indication information;
determining a value of the TPC for the PUSCH based on the association and the obtained SRS resource indication information; and
determining the value of the TPC for the SRS transmission according to the value of the TPC for the PUSCH.
4. The method of claim 2 , wherein the determining the value of the TPC for the SRS transmission comprises:
obtaining information of an association between SRS resource indication information and the TPC for the PUSCH;
obtaining the SRS resource indication information;
determining a value of the TPC for the PUSCH based on the association and the obtained SRS resource indication information; and
determining the value of the TPC for the SRS transmission according to the value of the TPC for the PUSCH.
5. The method of claim 1 , wherein the plurality of power control parameters are associated with a downlink reference signal type for pathloss estimation.
6. The method of claim 2 , wherein the plurality of power control parameters are associated with a downlink reference signal type for pathloss estimation.
7. The method of claim 6 , wherein the downlink reference signal type comprises at least one of:
a synchronization signal for Layer3 measurement; or
a UE-specific RS for Layer3 measurement.
8. An apparatus, comprising:
a non-transitory memory comprising instructions; and
one or more processors in communications with the non-transitory memory, wherein the one or more processors are configured to execute the instructions to:
obtain numerology information for a sounding reference signal (SRS) transmission, wherein the numerology information for the SRS transmission is associated with a plurality of power control parameters, and the plurality of power control parameters include a SRS initial target power, a pathloss, a pathloss compensation factor, and a transmit power command (TPC);
determine a value of the SRS initial target power, a value of the pathloss, and a value of the pathloss compensation factor in accordance with a radio resource control (RRC) configuration associated with the numerology information for the SRS transmission;
determine a value of the TPC for the SRS transmission from a TPC for a physical uplink shared channel (PUSCH) in accordance with a SRS resource indication for the SRS transmission;
determine a transmission power of an SRS in accordance with the value of the SRS initial target power, the value of the pathloss, the value of the pathloss compensation factor, and the value of the TPC for the SRS transmission; and
transmit the SRS using the transmission power.
9. The apparatus of claim 8 , wherein the SRS initial target power, the pathloss, and the pathloss compensation factor are associated with resource information for the SRS transmission.
10. The apparatus of claim 8 , wherein the one or more processors are further configured to execute the instructions to:
obtain information of an association between SRS resource indication information and the TPC for the PUSCH;
obtain the SRS resource indication information;
obtain a value of the TPC for the PUSCH based on the association and the obtained SRS resource indication information; and
obtain the value of the TPC for the SRS transmission according to the value of the TPC for the PUSCH.
11. The apparatus of claim 9 , wherein the one or more processors are further configured to execute the instructions to:
obtain information of an association between SRS resource indication information and the TPC for the PUSCH;
obtain the SRS resource indication information;
obtain a value of the TPC for the PUSCH based on the association and the obtained SRS resource indication information; and
obtain the value of the TPC for the SRS transmission according to the value of the TPC for the PUSCH.
12. The apparatus of claim 8 , wherein the plurality of power control parameters are associated with a downlink reference signal type for pathloss estimation.
13. The apparatus of claim 9 , wherein the plurality of power control parameters are associated with a downlink reference signal type for pathloss estimation.
14. The apparatus of claim 13 , wherein the downlink reference signal type comprises at least one of:
a synchronization signal for Layer3 measurement; or
a UE-specific RS for Layer3 measurement.
15. A non-transitory computer-readable medium storing computer instructions, that when executed by one or more processors, cause an apparatus to perform operations of:
obtaining numerology information for a sounding reference signal (SRS) transmission, wherein the numerology information for the SRS transmission is associated with a plurality of power control parameters, and the plurality of power control parameters include a SRS initial target power, a pathloss, a pathloss compensation factor, and a transmit power command (TPC);
determining a value of the SRS initial target power, a value of the pathloss, and a value of the pathloss compensation factor in accordance with a radio resource control (RRC) configuration associated with the numerology information for the SRS transmission;
determining a value of the TPC for the SRS transmission from a TPC for a physical uplink shared channel (PUSCH) in accordance with a SRS resource indication for the SRS transmission;
determining a transmission power of an SRS in accordance with the value of the SRS initial target power, the value of the pathloss, the value of the pathloss compensation factor, and the value of the TPC for the SRS transmission; and
transmitting the SRS using the transmission power.
16. The non-transitory computer-readable medium of claim 15 , wherein the SRS initial target power, the pathloss, and the pathloss compensation factor are associated with resource information for the SRS transmission.
17. The non-transitory computer-readable medium of claim 15 , the operations further comprising:
obtaining information of an association between SRS resource indication information and the TPC for the PUSCH;
obtaining the SRS resource indication information;
determining a value of the TPC for the PUSCH based on the association and the obtained SRS resource indication information; and
determining the value of the TPC for the SRS transmission according to the value of the TPC for the PUSCH.
18. The non-transitory computer-readable medium of claim 16 , the operations further comprising:
obtaining information of an association between SRS resource indication information and the TPC for the PUSCH;
obtaining the SRS resource indication information;
determining a value of the TPC for the PUSCH based on the association and the obtained SRS resource indication information; and
determining the value of the TPC for the SRS transmission according to the value of the TPC for the PUSCH.
19. The non-transitory computer-readable medium of claim 15 , wherein the plurality of power control parameters are associated with a downlink reference signal type for pathloss estimation.
20. The non-transitory computer-readable medium of claim 19 , wherein the downlink reference signal type comprises at least one of:
a synchronization signal for Layer3 measurement; or
a user equipment (UE)-specific RS for Layer3 measurement.